Update ratatui to 0.28

[tomgroenwoldt]

Hi, I'm currently in the process of using your crate and so far it worked out quite nice for my use case. The only problem I faced was conflicting ratatui versions.

This PR updates ratatui to 0.28 and adjusts the (now) deprecated functions.

[gin66]

Thanks for the patch.

[sgrimee]

Thank you, I was waiting for this!
Small suggestion to update to 0.12.0, not just 0.11.3 as it is a breaking change.
Cheers!

[gin66]

Strange. The patch has not shown up in master. Perhaps I have pressed the wrong button. Anyway, I have then manually updated master to that commit and bumped the version to 0.12.0.

The semver check has not flagged a problem with 0.11.3. Wonder, if/how that works

[sgrimee]

My reasoning was that upgrading ratatui will cause multiple versions of ratatui to be installed for apps that use tui-logger, often causing conflicts.
As it is a 0.x release, this comment from the book applies:
"This compatibility convention is different from SemVer in the way it treats versions before 1.0.0. While SemVer says there is no compatibility before 1.0.0, Cargo considers 0.x.y to be compatible with 0.x.z, where y ≥ z and x > 0.
"